Notice: Undefined index: [table_name] in demo_enum_tables()

On my localhost, OS X 10.11 with PHP56 and MYSQL 5.6.21 (lower_case_table_names = 2), on page /admin/structure/demo/dump, I have the notices:

Notice: Undefined index: actions in demo_enum_tables() (line 628 of /Users/alexandre/Sites/drupal/sites/all/modules/contrib/demo/demo.admin.inc).
Notice: Undefined index: authmap in demo_enum_tables() (line 628 of /Users/alexandre/Sites/drupal/sites/all/modules/contrib/demo/demo.admin.inc).
...

and more, after create the snapshot (back to .admin/structure/demo):

Notice: Undefined index: watchdog in demo_enum_tables() (line 628 of /Users/alexandre/Sites/drupal/sites/all/modules/contrib/demo/demo.admin.inc).
Notice: Undefined index: comment in _demo_table_is_view() (line 335 of /Users/alexandre/Sites/drupal/sites/all/modules/contrib/demo/database_mysql_dump.inc).
...

I solve with this patch:

diff --git a/sites/all/modules/contrib/demo/database_mysql_dump.inc b/sites/all/modules/contrib/demo/database_mysql_dump.inc
index 1d3eb7c..99e1ca4 100644
--- a/sites/all/modules/contrib/demo/database_mysql_dump.inc
+++ b/sites/all/modules/contrib/demo/database_mysql_dump.inc
@@ -132,7 +132,7 @@
   $output .= preg_replace(
     array('/^CREATE TABLE/', '/"/'),
     array('CREATE TABLE IF NOT EXISTS', '`'),
-    $data['create table']
+    $data['Create Table']
   );
 
   // @todo Rethink the following code. Perhaps try to strip + parse the existing
@@ -332,7 +332,7 @@
   static $tables = array();
   if (!isset($tables[$table])) {
     $status = db_query('SHOW TABLE STATUS LIKE :table', array(':table' => $table))->fetchAssoc();
-    $tables[$table] = (strtoupper(substr($status['comment'], 0, 4)) == 'VIEW');
+    $tables[$table] = (strtoupper(substr($status['Comment'], 0, 4)) == 'VIEW');
   }
   return $tables[$table];
 }
diff --git a/sites/all/modules/contrib/demo/demo.admin.inc b/sites/all/modules/contrib/demo/demo.admin.inc
index 1d40fc3..ae6562a 100644
--- a/sites/all/modules/contrib/demo/demo.admin.inc
+++ b/sites/all/modules/contrib/demo/demo.admin.inc
@@ -625,7 +625,7 @@
       if (preg_match($rx, $table, $matches)) {
         $table_prefix = $matches[0];
         $plain_table = substr($table, strlen($table_prefix));
-        if ($prefixes[$plain_table] == $table_prefix || $prefixes['default'] == $table_prefix) {
+        if ( (array_key_exists($plain_table, $prefixes) && $prefixes[$plain_table] == $table_prefix) || $prefixes['default'] == $table_prefix ) {
           $tables[$table] = array('schema' => TRUE, 'data' => TRUE);
         }
       }

Cheers.